The history of light steel structures produced by cold forming begins in the early 20th century when the aircraft industry needs light and high-capacity products. At the same time, the needs in the automobile industry also contribute to the development of such techniques and the acceleration of research in this content. When we come to the aftermath of World War I, the thin sheets produced in the cold form are used as car body material in the automobile industry and railway wagons.
The absence of steel materials during World War II contributes to the further development and expansion of this technique. In the following years, the products made with the cold shaping technique began to be used rapidly in the USA and the UK. The European countries follow the USA and the UK and thus the steel carrier elements produced by shaping the cold take their place in the building sector.
Cold forming is the cold compression method in which the material is compressed by the help of the mold and the shape of the mold is obtained. Uses metal properties of metal to shape metals at room temperature. It is also available as an alternative to this process. However, it takes a lot of time to process the material by removing the chips and a large amount of wood chips is removed from the process. Cold forging is completed in a short time and no sawdust. For this reason, great attention is given to cold forming.
Nowadays, the use of steel profiles, which are shaped with cold or shaped by using press as main carrier or secondary carrier (lover, belt) has become widespread in construction systems. Because this style is quickly adopted and increased its use;
- Economical and fast production of the most suitable sections with load bearing capacity / weight ratio is possible by cold forming.
- The building system can be produced and stocked quickly and in desired number, ready for installation.
- Produced elements are light. It doesn’t require much labor and cost because it is lightweight to be stocked and moved from the stock area to the area to be mounted.
- Installation is short and cheap.
- Easily sectioned for solutions of different architectural details. The elegant details required for the architecture are transported to this point in a way easier to reach. As they move, these sleek and light-section profiles provide optimum bearing capacity.
- Thin-walled sections produced by cold forming method and steel frame structures formed with them; In order to create different shapes, the lightweight frame made with steel hairs at room temperature forms the elements of building constructions. These sections allow designers to achieve maximum levels of sustainable standards in the building sector.
- The use of cold-formed steel frames reduces the amount of waste generated on construction sites. The reason for this is that almost all construction projects are pre-engineered and prepared based on the preparation of frame elements and panels in a planned manner with efficient technology and then transported to the field.
- One of the main design criteria is the robustness of the reaction of the section walls against buckling. The open sections have lower torsional stiffness compared to the closed sections, whether hot-rolled or cold-shaped. We can simply explain this as follows; open sections have higher resistance against external reactions. The cold-formed thin-walled steel profiles and the steel frames produced with them are very successful structural elements. Considering that the cross-sectional shapes selected in these structural elements are open sections, we understand that the strength is very high.